SlMYB41通过激活SlHSP90.3的表达来积极调节番茄的耐热性
Jieyu Wang1, Chong Chen2, Chuanzhao Wu1
1State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, 271018, China.
Plant physiology and biochemistry : PPB
|October 25, 2023
概括
番茄的植物 番茄的植物.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 高温压力显著限制了作物产量.
- 了解植物耐热机制对于农业至关重要.
- 目前仍在确定植物耐热性的关键调节因素.
研究的目的:
- 调查MYB转录因子SLMYB41在番茄热耐性中的作用.
- 阐明SlmYB41影响热应激反应的分子机制.
主要方法:
- 从西红 (Solanum lycopersicum) 中克隆了SlmYB41.
- 产生SLMYB41-RNA干扰 (RNAi) 和CRISPR/Cas9突变系.
- 在高温应力条件下进行生理和分子分析.
- 酵母一种混合 (Y1H) 和露西法酶 (LUC) 测试以确定基因相互作用.
主要成果:
- 缺乏SLMYB41的番茄系在热应力下表现出增加的色,离子泄漏,MDA积累和反应性氧物种 (ROS).
- 光合作用能力,以光合作用速率和Fv/Fm表示,在突变系中更严重受损.
- 热冲击蛋白基因 (SlHSP17.6,SlHSP17.7,SlHSP90.3) 的表达在SlMYB41缺乏的线条中被下调.
- 表明SlmYB41可以直接激活SlHSP90.3.3的转录.
结论:
- SlMYB41在番茄耐热性方面发挥着积极的调节作用.
- 通过SlmYB41激活SlHSP90.3表达是番茄耐热的关键机制.
- 这项研究确定了Slmyb41作为提高作物耐热应激的潜在目标.
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